I want to buy them on ebay, because I couldn't see the movie in 3D so I couldn't actually buy them. Well, when you go new glasses, they will either let you get new frames or keep your old frames, just replacing the lenses. I want to do this with the 3D glasses, have the lenses replaced, turning them into prescription sunglasses. I don't want to do this, however, if the glasses are made of super cheap plastic and will most likely break soon. Please Help!! I'm being serious. Please give me serious answers.